Estimated Exposures and Thyroid Doses Received by the American People
from Iodine-131 in Fallout Following Nevada Atmospheric Nuclear Bomb Tests
is a report from the National Cancer Institute (NCI). The report contains
results from a study to assess Americans' exposures to radioactive iodine-131
fallout from atmospheric nuclear bomb tests carried out at the Nevada Test
Site in the 1950s and 1960s. This report was mandated by Congress under
Public Law 97-414.

Results of the study show that, depending on their age at the time of
the tests, where they lived, and what foods they consumed, particularly
milk, Americans were exposed to varying levels of I-131 for about two months
following each of the 90 tests. The report, published
in full on this website, provides the technical details of this study.